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Updated: Apr 17, 2026

Establishing a Device for Sleep Deprivation in Mice
Published on: September 22, 2023
Sleepwalking episodes are preceded by arousal-related activation in the cingulate motor area: EEG current density
Piotr Januszko1, Szymon Niemcewicz1, Tomasz Gajda1
1Department of Psychiatry, Medical University of Warsaw, Nowowiejska 27, 00-665 Warsaw, Poland.
Objective:
To investigate local arousal fluctuations in adults who received ICSD-2 diagnosis of somnambulism.
Methods:
EEG neuroimaging (eLORETA) was utilized to compare current density distribution for 4s epochs immediately preceding sleepwalking episode (from -4.0 s to 0 s) to the distribution during earlier 4s epochs (from -8.0 s to -4.0 s) in 20 EEG segments from 15 patients.
Results:
Comparisons between eLORETA images revealed significant (t>4.52; p<0.05) brain activations before onset of sleepwalking, with greater current density within beta 3 frequency range (24-30 Hz) in Brodmann areas 33 and 24.
Conclusions:
Sleepwalking motor events are associated with arousal-related activation of cingulate motor area.
Significance:
These results support the notion of blurred boundaries between wakefulness and NREM sleep in sleepwalking.
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